Universal Triangle Solver v3.1
APK · 1.1 MB · version code 31 · Android 3.2+ · uploaded May 26, 2025
- Signed with Android's public test key Details
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File information
- Version
- v3.1 (31)
- Uploaded
- May 26, 2025
- Size
- 1.1 MB
- Requires
- Android 3.2+ (API 13)
- CPU support
- Any (no native code)
- Screen
- Small screens and larger
- MD5
- 975fa0fe82e2a7b7da74ed6664afcaf0
- Signing certificate (SHA-1)
- 61:ED:37:7E:85:D3:86:A8:DF:EE:6B:86:4B:D8:5B:0B:FA:A5:AF:81
- Signed by
- [email protected], CN=Android, OU=Android, O=Android, L=Mountain View, ST=California, C=US
- File name
- com-ctoutpris-android-trianglesolver-31-70739327-975fa0fe82e2a7b7da74ed6664afcaf0.apk
- Package
- com.ctoutpris.android.trianglesolver
- Downloads (all versions)
- 100K+
- Age rating
- PEGI 3 · Everyone
What's new in v3.1
- Add context menu with new settings, to replace the options menu which was not accessible on some devices which don't have a menu button.
- Screen orientation can be changed in settings.
- The "second solution" is accessible only when there is one.
- Added the triangle height. It can be disabled in settings.
- Some other minor improvements.
Permissions (2)
This version requests 2 permissions, none of them sensitive.
- Full network access android.permission.INTERNET
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Unknown
Signing certificate
- Signed with Android's public test key This key is published with Android's source code, so anyone can sign a file with it.
- The same certificate signs apps from 141 different developers Developers sign only their own apps, so this almost always means the files were re-signed by someone else — often after being modified.
Store checks
- Developer signature not checked yet May 26, 2025
- Uploaded by “lacostetm” 1 followers · uploading since 2018
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself.
How to install Universal Triangle Solver on Android 3.2+
You'll need about 2.3 MB of free space.
- Download the APK — tap Download APK above (1.1 MB). Chrome shows “File might be harmful” for every APK file; choose Download anyway only if you trust this file.
- Open the file — tap the download notification, or open Files › Downloads and tap com-ctoutpris-android-trianglesolver-31-70739327-975fa0fe82e2a7b7da74ed6664afcaf0.apk.
- Allow the install (first time only) — Android 8 and later asks for permission the first time an app opens an APK: tap Settings in the prompt, turn on Allow from this source, then go back. Manual path: Settings › Apps › Special app access › Install unknown apps (on Samsung: Settings › Apps › ⋮ › Special access). On Android 7 and older: Settings › Security › Unknown sources.
- Check the file (optional) — the MD5 of the downloaded file should be 975fa0fe82e2a7b7da74ed6664afcaf0. If it differs, the file is damaged or was changed: delete it and download again.
- Tap Install — Android asks “Do you want to install this app?”. This file has no malware rating from the source store. If Play Protect warns about it, tap Cancel. If an earlier version is installed, this one only installs as an update when it is signed with the same certificate (SHA-1 shown above).
- Open Universal Triangle Solver — tap Open on the install screen, or find it in your app drawer.
Common install problems
- “App not installed” — a version signed with a different certificate, or a newer version, is already installed (Android doesn't allow downgrades). Uninstall it first; back up your data, because uninstalling deletes it.
- “There was a problem parsing the package” — the file is incomplete, or your Android is too old (this version needs Android 3.2+). Download it again, or pick an older version.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.